Kris and Duhamel make Les brigades du temps (“The Time Brigades”), about a corps of time-traveling agents, which runs in the magazine.
Ian Dairin‘s series KatZ is a frequent part of the magazine, and he’s been known to draw Spirou fanart.
Bercovici is another artist who draws one of Cauvin’s series for the magazine; in his case Les femmes en blanc (“The Women in White”) as well as several others.
Bédu draws the Cauvin-penned Les Psy (“Shrink” or “Shrinks”; I’m not quite sure) which runs regularly in the magazine.
Jannin is a long-time contributor to the Journal, and apart from his own comics he’s also been in charge of the recent color restorations and recolorings of some of Franquin’s Spirou stories.
Émile Bravo, of course, is the man behind the one-shot Journal d’un ingénu (“The Diary of a Naive Young Man”).